<template>
  <a-breadcrumb class="app-breadcrumb" separator="/">
    <a-breadcrumb-item v-for="(item, index) in levelList" :key="item.path">
      <span v-if="item.redirect === 'noRedirect' || index == levelList.length - 1">
        {{ item.meta?.title }}
      </span>
      <a v-else @click.prevent="handleLink(item)">
        {{ item.meta?.title }}
      </a>
    </a-breadcrumb-item>
  </a-breadcrumb>
</template>

<script lang="ts" setup>
import { RouteLocationMatched } from "vue-router";

const route = useRoute();
const router = useRouter();
const levelList = ref<any[]>([]);

const getBreadcrumb = () => {
  let matched = route.matched.filter(item => item.meta && item.meta.title);
  const first = matched[0];
  // 判断是否为首页
  if (!isDashboard(first)) {
    matched = ([{ path: "/index", meta: { title: "首页", icon: "dashboard" } }] as any).concat(matched);
  }
  levelList.value = matched.filter(item => item.meta && item.meta.title && item.meta.breadcrumb !== false);
};
const isDashboard = (route: RouteLocationMatched) => {
  const name = route && (route.name as string);
  if (!name) {
    return false;
  }
  return name.trim() === "Index";
};
const handleLink = (item: RouteLocationMatched) => {
  const { redirect, path } = item;
  redirect ? router.push(redirect as string) : router.push(path);
};

watchEffect(() => {
  if (route.path.startsWith("/redirect/")) return;
  getBreadcrumb();
});
onMounted(() => {
  getBreadcrumb();
});
</script>

<style lang="less" scoped>
.app-breadcrumb.arco-breadcrumb {
  user-select: none;
  display: inline-block;
  font-size: 14px;
  line-height: 46px;
  margin-left: 8px;

  .no-redirect {
    color: #97a8be;
    cursor: text;
  }
}
</style>
